Double-layer square insulated container

ABSTRACT

A double-layer square insulated container includes a cuboid container body, which includes an inner liner and an outer shell, between which a vacuum layer is arranged. Reinforcing ribs are arranged on each of the inner liner and the outer shell and can make a surface of the square container evenly stressed during vacuumizing to avoid being crushed by suction. Reinforcing ribs are added to a surface of a mold. When the height of the reinforcing ribs is set to about 2 mm, the square surface is evenly stressed. Moreover, by repeated tests, the thickness of the inner liner and the outer shell is only about 0.5 mm, such that the weight of the square container is greatly reduced. Reinforcing ribs in different shapes are added to the periphery and bottom surface of the square container, which ensures support force of steel walls and improves the appearance.

CROSS REFERENCE TO THE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Application No. 202123353838.3, filed on Dec. 29, 2021, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of molds, in particular to a double-layer square insulated container.

BACKGROUND

An existing double-layer vacuum insulated container is welded by inner and outer stainless steel, and air between an inner liner and an outer shell is extracted by a vacuum furnace to form an inside vacuum layer. The vacuum layer cuts off heat conduction between inside and outside to keep warm and cold. Due to atmospheric pressure, the inner and outer stainless steel needs to maintain a certain strength to ensure that it will not be crushed. It can be seen from the physical principle that support force in all directions of an arc surface is evenly distributed to ensure that the vacuum layer is not crushed by suction more simply. The existing square container has four flat surfaces at the periphery and four corners in arc transition, which will cause the entire surface to be unevenly stressed. The support force is relatively strong for the four corners, but is relatively weak for the flat surfaces, such that the middles of the flat surfaces are recessed downwards to affect both overall appearance and vacuum effect.

In general, the thickness of a material is increased to solve the above problems in the market. But the cost, and the weight of a container body are increased, thus affecting customer experience and market competitiveness.

SUMMARY

In order to overcome the shortcomings in the prior art, an objective of the present disclosure is to provide a double-layer square insulated container, so as to solve the problems mentioned in the above background.

In order to achieve the above objective, the present disclosure adopts the following technical solution:

A double-layer square insulated container, including a container body, where the container body is in the shape of a cuboid as a whole, and includes an inner liner and an outer shell; a vacuum layer is arranged between the inner liner and the outer shell; reinforcing ribs are arranged on each of the inner liner and the outer shell; and the reinforcing ribs can make a surface of the square container evenly stressed during vacuumizing to avoid being crushed by suction.

Preferably, the thickness of the outer shell is 0.48 mm-0.60 mm.

More preferably, the thickness of the inner liner is 0.45 mm-0.55 mm.

More preferably, the height of the reinforcing ribs is 1.5 mm-2.2 mm.

Preferably, container opening reinforcing ribs are arranged on two opposite side walls of a container opening of the outer shell to avoid deformation during vacuumizing.

More preferably, support surfaces of the container opening reinforcing ribs are perpendicular to each other.

Preferably, reinforcing ribs are further arranged at the bottom of each of the inner liner and the outer shell.

Preferably, the outer shell is fixedly arranged outside the inner liner by welding, and welding points between the outer shell and the inner liner are distributed around the container opening.

More preferably, a bottom of the outer shell is formed with vacuum holes.

Compared with the prior art, the present disclosure has the following beneficial effects:

According to the present disclosure, reinforcing ribs are added to a surface of a mold, and when the height of the reinforcing ribs is set to about 1.5 mm-2.2 mm (no effect for 1 mm, and poor appearance after molding for 3 mm), the square surface is evenly stressed to avoid being crushed by suction. Moreover, by repeated tests, the thickness of the inner liner and the outer shell is only about 0.5 mm, such that the weight of the square container is greatly reduced. Reinforcing ribs in different shapes are added to the periphery and bottom surface of the square container, which ensures support force of steel walls and improves the appearance.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly describe the technical solutions of the embodiments of the present disclosure, the accompanying drawings required to describe the embodiments will be briefly introduced below. Apparently, the accompanying drawings in the following description are only some embodiments of the present disclosure. Those skilled in the art can also derive other accompanying drawings from these accompanying drawings without creative efforts.

FIG. 1 is a schematic diagram of an overall structure of the present disclosure.

FIG. 2 is a schematic structural diagram of the bottom of an outer shell in the present disclosure.

FIG. 3 is a schematic structural diagram of a side wall of the present disclosure.

FIG. 4 is a schematic diagram of another side wall of the present disclosure.

In the figures, reference signs are as follows:

1 denotes a vacuum layer; 2 denotes a container body; 3 denotes a container opening reinforcing rib; 4 denotes a bottom of an outer shell; 41 denotes a vacuum hole; 5 denotes a container opening; 6 denotes a reinforcing rib; 7 denotes a side wall; and 8 denotes a welding point.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to describe the present disclosure more clearly, the present disclosure is further described in detail below with reference to the embodiments and the accompanying drawings. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not limit the scope of protection of the present disclosure.

In the description of the present disclosure, it should be noted that the orientational or positional relationships indicated by the terms “inside”, “outside”, “upper”, “lower”, etc. are the orientational or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. In addition, unless otherwise expressly specified and limited, the terms “installation”, “connection”, etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; and it may be a direct connection, an indirect connection by an intermediate medium, or an internal connection between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure may be understood according to specific circumstances.

EMBODIMENT

As shown in FIGS. 1-4 , a double-layer square insulated container includes a container body 2; the container body 2 is in the shape of a cuboid as a whole, and the container body 2 includes an inner liner and an outer shell; a bottom 4 of the outer shell is formed with vacuum holes 41; a vacuum layer 1 is arranged between the inner liner and the outer shell; the outer shell is fixedly arranged outside the inner liner by welding; and welding points 8 between the outer shell and the inner liner are distributed around a container opening. Reinforcing ribs 6 are arranged on a side wall 7 of each of the inner liner and the outer shell; and the reinforcing ribs 6 can make a surface of the square container evenly stressed during vacuumizing to avoid being crushed by suction. The container opening 5 of the outer shell is provided with container opening reinforcing ribs 3, and the container opening reinforcing ribs 3 are arranged on two opposite side walls 7 of the container opening of the outer shell to avoid deformation during vacuumizing. Support surfaces of the container opening reinforcing ribs 3 must be perpendicular to each other, in other words, the inclination of the support surfaces will cause the side walls 7 to be stressed, which greatly reduces the support strength. In this embodiment, the container opening reinforcing ribs 3 are triangular, and two right-angle sides are respectively located on thickness difference platforms between the side walls of the container opening 5 and the side walls 7, and between the container opening 5 and the side walls 7. Reinforcing ribs 6 are further arranged at the bottom of each of the inner liner and the outer shell.

The thickness of the outer shell is 0.48 mm-0.60 mm, the thickness of the inner liner is 0.45 mm-0.55 mm, and the height of the reinforcing ribs 6 is 1.5 mm-2.2 mm. By repeated tests, the thickness of the inner liner and the outer shell is only about 0.5 mm, such that the weight of the square container can be greatly reduced. In this embodiment, the thickness of both the inner liner and the outer shell is 0.5 mm, and the height of the reinforcing ribs 6 is set to 2 mm. By tests, the reinforcing ribs 6 have no effect for 1 mm and are not attractive after molding for 3 mm.

FIG. 3 is an arrangement mode of reinforcing ribs 6 on a side wall 7 provided in this embodiment, and FIG. 4 is another arrangement mode of the reinforcing ribs 6. The specific arrangement mode of the reinforcing ribs 6 can be adjusted according to different needs. In this embodiment, both the inner liner and the outer shell of the container body 2 are made of food-grade stainless steel, and reinforcing ribs 6 in different shapes are added to the periphery and bottom surface of the container body 2, which ensures support force of steel walls and improves the appearance.

Obviously, the above-mentioned embodiments of the present disclosure are only examples for describing the present disclosure more clearly, rather than limiting an implementation mode of the present disclosure. For those of ordinary skill in the art, other variations or changes in different forms can be made on the basis of the above description. It is impossible to list all implementation methods here. The obvious variations or changes derived from the technical solutions of the present disclosure still fall within the scope of protection of the present disclosure. 

1. A double-layer square insulated container, comprising: a container body, the container body comprising: an inner liner, an outer shell, a vacuum layer, the vacuum layer being arranged between the inner liner and the outer shell, and reinforcing ribs, the reinforcing ribs being arranged on each of the inner liner and the outer shell; wherein the container body is in a shape of a cuboid as a whole; and wherein the reinforcing ribs are configured to make a surface of the double-layer square insulated container evenly stressed during vacuumizing to avoid being crushed by suction.
 2. The double-layer square insulated container according to claim 1, wherein a thickness of the outer shell is 0.48 mm-0.60 mm.
 3. The double-layer square insulated container according to claim 2, wherein a thickness of the inner liner is 0.45 mm-0.55 mm.
 4. The double-layer square insulated container according to claim 3, wherein a height of the reinforcing ribs is 1.5 mm-2.2 mm.
 5. The double-layer square insulated container according to claim 1, further comprising container opening reinforcing ribs, wherein the container opening reinforcing ribs are arranged on two opposite side walls of a container opening of the outer shell to avoid deformation during vacuumizing.
 6. The double-layer square insulated container according to claim 5, wherein support surfaces of the container opening reinforcing ribs are perpendicular to each other.
 7. The double-layer square insulated container according to claim 1, wherein reinforcing ribs are further arranged at a bottom of the inner liner and a bottom of the outer shell.
 8. The double-layer square insulated container according to claim 1, wherein the outer shell is fixedly arranged outside the inner liner by welding, and welding points between the outer shell and the inner liner are distributed around a container opening of the outer shell.
 9. The double-layer square insulated container according to claim 1, wherein a bottom of the outer shell is formed with vacuum holes.
 10. The double-layer square insulated container according to claim 2, wherein a bottom of the outer shell is formed with vacuum holes.
 11. The double-layer square insulated container according to claim 3, wherein a bottom of the outer shell is formed with vacuum holes.
 12. The double-layer square insulated container according to claim 4, wherein a bottom of the outer shell is formed with vacuum holes.
 13. The double-layer square insulated container according to claim 5, wherein a bottom of the outer shell is formed with vacuum holes.
 14. The double-layer square insulated container according to claim 6, wherein a bottom of the outer shell is formed with vacuum holes.
 15. The double-layer square insulated container according to claim 7, wherein the bottom of the outer shell is formed with vacuum holes.
 16. The double-layer square insulated container according to claim 8 wherein a bottom of the outer shell is formed with vacuum holes. 